| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1657.2-2007 | English | 879 |
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Days<=5
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Technical Specification for the Proxy Supporting Network Address Translation/Firewall Traverse of Multimedia Services. Part 2: SIP Proxy
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YD/T 1657.2-2007
| Valid |
YD/T 1657.2-2007
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